x="fu"
print(x)
x,y="fu","dong"
print(x),print(y)
[x,y]=["fu","dong"]
print(x),print(y)
a,b,c,d="dong"
print(a,b,c,d)
a,*b="dong"
print(a),print(b)
a=b="dong"
print(a,b)
a = 4
a += 3
print(a)
((a,b),c)=('fu','dong')
print(a,b,c)